Isard, W. (1972). Ecologic-economic analysis for regional development: Some initial explorations with particular reference to recreational resource use and environmental planning. New York: The Free Press.
Παραπομπή Chicago StyleIsard, Walter. Ecologic-economic Analysis for Regional Development: Some Initial Explorations With Particular Reference to Recreational Resource Use and Environmental Planning. New York: The Free Press, 1972.
Παραπομπή MLAIsard, Walter. Ecologic-economic Analysis for Regional Development: Some Initial Explorations With Particular Reference to Recreational Resource Use and Environmental Planning. New York: The Free Press, 1972.
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